DE69722857D1 - Plattenlaufwerk mit auf thermoresistiven Signalen von einem magnetoresistiven Kopf basierender Stossdetektion - Google Patents

Plattenlaufwerk mit auf thermoresistiven Signalen von einem magnetoresistiven Kopf basierender Stossdetektion

Info

Publication number
DE69722857D1
DE69722857D1 DE69722857T DE69722857T DE69722857D1 DE 69722857 D1 DE69722857 D1 DE 69722857D1 DE 69722857 T DE69722857 T DE 69722857T DE 69722857 T DE69722857 T DE 69722857T DE 69722857 D1 DE69722857 D1 DE 69722857D1
Authority
DE
Germany
Prior art keywords
thermoresistive
signals
disk drive
detection based
magnetoresistive head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69722857T
Other languages
German (de)
English (en)
Inventor
Prakash Kasiraj
Steven Wayne Meeks
Timothy Clark Reiley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBM United Kingdom Ltd
HGST Netherlands BV
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69722857D1 publication Critical patent/DE69722857D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5582—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock
DE69722857T 1996-06-13 1997-04-02 Plattenlaufwerk mit auf thermoresistiven Signalen von einem magnetoresistiven Kopf basierender Stossdetektion Expired - Lifetime DE69722857D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/664,960 US5777815A (en) 1996-06-13 1996-06-13 Disk drive with shock detection based on thermoresistive signal from magnetoresistive head

Publications (1)

Publication Number Publication Date
DE69722857D1 true DE69722857D1 (de) 2003-07-24

Family

ID=24668150

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69722857T Expired - Lifetime DE69722857D1 (de) 1996-06-13 1997-04-02 Plattenlaufwerk mit auf thermoresistiven Signalen von einem magnetoresistiven Kopf basierender Stossdetektion

Country Status (7)

Country Link
US (1) US5777815A (ko)
EP (1) EP0813187B1 (ko)
JP (1) JP3737872B2 (ko)
KR (1) KR100259453B1 (ko)
CN (1) CN1074565C (ko)
DE (1) DE69722857D1 (ko)
MY (1) MY117475A (ko)

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US6489762B2 (en) * 2001-04-26 2002-12-03 Samsung Electronics Co., Ltd. Method to detect junction induced signal instability from GMR/MR heads
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US7349174B2 (en) 2001-11-15 2008-03-25 Seagate Technology Llc Soft sensor for operating shock in a disc drive
US6556006B1 (en) * 2001-11-21 2003-04-29 Samsung Electronics Co., Ltd. Method for magneto-resistive head electrostatic popping detection
US7486457B2 (en) * 2002-02-15 2009-02-03 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for predicting write failure resulting from flying height modulation
US20040032687A1 (en) * 2002-08-13 2004-02-19 Ng Hwa Liang Head-slap detection for a data storage device
US7042663B2 (en) * 2002-10-03 2006-05-09 Hitachi Global Storage Technologies Netherlands B.V. Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method
US6952322B1 (en) * 2002-11-27 2005-10-04 Western Digital Technologies, Inc. Disk drive reading servo sectors recorded at a relative offset on multiple disk surfaces to increase the servo sample rate
US7299141B2 (en) 2002-12-05 2007-11-20 Hewlett-Packard Development Company, L.P. System and method for controlling vibration
JP2007505430A (ja) * 2003-09-08 2007-03-08 コニンクリユケ フィリップス エレクトロニクス エヌ．ブイ． ディスク駆動装置
US7312941B2 (en) * 2003-09-17 2007-12-25 Hitachi Global Storage Technologies Netherlands B.V. Disk drive with head-disk interaction sensor integrated with suspension
US6958871B2 (en) * 2003-09-17 2005-10-25 Hitachi Global Storage Technologies Netherlands B.V. Head-disk interaction sensor integrated with suspension
KR100594252B1 (ko) * 2004-02-17 2006-06-30 삼성전자주식회사 데이터 저장 장치에서의 헤드 움직임 제어 방법 및 이를이용한 디스크 드라이브
KR100604863B1 (ko) * 2004-05-29 2006-07-26 삼성전자주식회사 헤드의 진동에 의한 영향을 회피하기 위한 하드디스크 드라이브의 기록 제어 방법 및 이에 적합한 장치
KR100618866B1 (ko) * 2004-10-02 2006-08-31 삼성전자주식회사 전자기기의 자유 낙하 검출방법 및 장치
US7369345B1 (en) 2004-12-03 2008-05-06 Maxtor Corporation Mobile hard disk drive free fall detection and protection
US7350394B1 (en) * 2004-12-03 2008-04-01 Maxtor Corporation Zero-g offset identification of an accelerometer employed in a hard disk drive
US8310779B2 (en) * 2005-04-27 2012-11-13 Seagate Technology Llc Head assembly having a sensing element
KR100682949B1 (ko) * 2005-07-27 2007-02-15 삼성전자주식회사 갭 실드를 포함하는 수직 자기 기록 헤드 및 수직 자기 기록 장치
JP2007115309A (ja) * 2005-10-19 2007-05-10 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク装置
JP4640977B2 (ja) * 2005-10-27 2011-03-02 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ ディスク記憶装置及びその制御方法
US7180692B1 (en) * 2005-12-27 2007-02-20 Hitachi Global Storage Technologies Netherlands B.V. System and method for calibrating and controlling a fly-height actuator in a magnetic recording disk drive
JP2007184023A (ja) * 2006-01-04 2007-07-19 Hitachi Global Storage Technologies Netherlands Bv ディスク・ドライブ及びその制御方法
US7292401B2 (en) * 2006-03-14 2007-11-06 Hitachi Global Storage Technologies Netherlands B.V. System and method for determining head-disk contact in a magnetic recording disk drive by magnetoresistive signal amplitude
JP2007335016A (ja) * 2006-06-15 2007-12-27 Fujitsu Ltd ヘッドスラップ検出装置、記憶装置、ヘッドスラップ検出方法、およびヘッドスラップ検出プログラム
US7821741B2 (en) * 2006-12-27 2010-10-26 Hitachi Global Storage Technologies Netherlands, B.V. Disk drive head stack assembly interacting with movement guide for preventing head from contacting the disk during read/write operations
US8159771B2 (en) * 2007-06-01 2012-04-17 Seagate Technology Llc Controlling a heat resistive element with a pulse modulated signal
JP2009009648A (ja) * 2007-06-28 2009-01-15 Fujitsu Ltd 記憶装置及びその制御装置、ヘッド振動測定方法
US7826162B2 (en) * 2007-10-17 2010-11-02 Samsung Electronics Co., Ltd. Apparatus and method for sensing an external magnetic field to protect a perpendicular magnetic recording (PMR) hard disk drive
JP4909878B2 (ja) * 2007-11-30 2012-04-04 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ ディスク・ドライブ装置及びそのクリアランス調整方法
US8120353B2 (en) * 2008-04-28 2012-02-21 International Business Machines Corporation Methods for detecting damage to magnetoresistive sensors
JP5610507B2 (ja) * 2009-09-17 2014-10-22 エイチジーエスティーネザーランドビーブイ ヘッドスライダ及び磁気ディスク装置
US8792311B2 (en) 2011-02-08 2014-07-29 Seagate Technology Llc Transducer head temperature monitoring
US8724249B2 (en) * 2011-12-20 2014-05-13 HGST Netherlands B.V. Disk drive with multiplexed read signal and fly-height signal for fly-height monitoring during writing
CN103187072B (zh) * 2011-12-29 2017-03-22 新科实业有限公司 磁头悬臂组合的抗振方法
US8804267B2 (en) * 2012-11-07 2014-08-12 Western Digital Technologies, Inc. Disk drive predicting spindle motor failure by evaluating current draw relative to temperature
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US5521772A (en) * 1993-11-30 1996-05-28 International Business Machines Corporation Disk drive with accerleration rate sensing
JP3063022B2 (ja) * 1994-09-12 2000-07-12 ホーヤ株式会社 表面凹凸検出方法及びその装置並びに磁気ディスク検査方法

Also Published As

Publication number Publication date
EP0813187A3 (en) 1998-03-11
JPH10134492A (ja) 1998-05-22
US5777815A (en) 1998-07-07
CN1173691A (zh) 1998-02-18
EP0813187B1 (en) 2003-06-18
KR980004818A (ko) 1998-03-30
JP3737872B2 (ja) 2006-01-25
CN1074565C (zh) 2001-11-07
MY117475A (en) 2004-07-31
KR100259453B1 (ko) 2000-06-15
EP0813187A2 (en) 1997-12-17

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Legal Events

Date Code Title Description
8332 No legal effect for de
8327 Change in the person/name/address of the patent owner

Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.

Owner name: IBM UNITED KINGDOM LTD., PORTSMOUTH, HAMPSHIRE, GB